John a



UNTTED STATES PATENT OFFTCE.

JOHN A. COLE, OF WASHINGTON, DISTRICT OF COLUMBIA.

MACHINE FOR SAWING OUT TAPERING BLOCKS 0F MARBLE.

Specification of Letters Patent No.

To all whom fit may concern:

Be it known that I, JOHN A. COLE, of the city of lVashington and District of Columbia, have invented a new and useful Machine for Sawing Stone lVith Two Sides' Tapered at One Cut Subject to any Desired Change of Angle; and I do hereby decla-re that the following is a full, clear, and exact description of the. construction and operation of the same, reference being had to the annexed drawings, making part of this specification, in which- Figure l is a perspective view of front of machine; and Fig. 2 is an end view of same.

` a a. are two horizontal crossbeams attached to main -beam which drives the saws. Saw frames f, f, are hung by pins 0, 0, to crossbeams a, cz, which have slots to admit the saw frames f, f, to slide together or apart as desired. On the bottom yof saw frames f, f, are shoes b to which the saws are at- Attached to shoes tached by draw bolts.

13,866, dated December 4, 1855.

b, Z), are two slides or sound bars, that work in a die, the die working in guides c, a, attached to shaft g, g. On each end of shaft g, g, is a rack o, c, fastened to shaft g, g, by straps, to admit the shaft to turn7 thus giving any desired angle to guides c c which are kept in their position by circular plate z, and handle or lever a. This machine is calculated to saw any desired angle or straight. By putting on two crosspieces at the bottom of saw frames f, f, a gang of saws can be run.

Claim:

Attaching the saws to swinging frames f, f," by pivots at each end which will admit the shoes b, b, turning to any angle to follow guides e, e, the whole being arranged in the manner and for the purpose setforth.

JNO. A. COLE. Vit-nesses HENRY DENMEAD, JAS. J. JONES. 

